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CVE-2019-19816

Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.

POC

Reference

- https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816

- https://usn.ubuntu.com/4414-1/

Github

- https://github.com/ARPSyndicate/cvemon